Suzuki K Poulose 5678109857 coresight: etm4x: Skip accessing TRCPDCR in save/restore ... [ Upstream commit df81b43802 ] When the ETM is affected by Qualcomm errata, modifying the TRCPDCR could cause the system hang. Even though this is taken care of during enable/disable ETM, the ETM state save/restore could still access the TRCPDCR. Make sure we skip the access during the save/restore. Found by code inspection. Link: https://lore.kernel.org/r/20210110224850.1880240-3-suzuki.poulose@arm.com Fixes: 02510a5aa7 ("coresight: etm4x: Add support to skip trace unit power up") Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org> Cc: Tingwei Zhang <tingwei@codeaurora.org> Tested-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org> Reviewed-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20210201181351.1475223-5-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-03-04 11:38:13 +01:00
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coresight	coresight: etm4x: Skip accessing TRCPDCR in save/restore	2021-03-04 11:38:13 +01:00
intel_th	intel_th: pci: Add Alder Lake-P support	2021-01-27 11:55:15 +01:00
stm	stm class: Fix module init return on allocation failure	2021-01-27 11:55:15 +01:00
Kconfig	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00